JavaScript 就地编辑HTML节点实现代码

时间:2020-05-12 人气:0

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> 
<title>点击编辑当前内容</title>

this.createElements(); //动态生成编辑输入框 
this.toScan(); //初始化动态生成的输入框和按钮、待编辑的DOM元素的display属性 
this.addEvents(); //给相关的DOM元素添加事件监听器 
}, 
events:function(elem,type,fn){ //用于添加事件的通用函数 
if(elem.attachEvent){ 
elem.attachEvent("on"+type,fn); 
}else if(elem.addEventListener){ 
elem.addEventListener(type,fn,false); 
}else{ 
elem["on"+type]=fn; 
} 
return elem; 
}, 
addEvents:function(){ //添加事件 
var that=this; 
this.events(this.btnSubmit,"click",function(){ 
that.save(); 
}); 
this.events(this.btnCancel,"click",function(){ 
that.cancel(); 
}); 
this.events(document.getElementById(this.id),"click",function(){ 
that.toEdit(); 
}); 
}, 
insertAfter:function(newNode,referenceNode){ //将动态生成的输入框和按钮插入到待编辑元素的后面 
if (referenceNode.nextSibling) { 
referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling); 
}else{ 
var p=referenceNode.parentNode || document.body; 
p.appendChild(newNode); 
} 
}, 
createElements:function(){ //动态生成输入框和按钮 
this.divContainer=document.createElement("div"); 
//this.parentElement.appendChild(this.divContainer); 
this.insertAfter(this.divContainer,document.getElementById(this.id));

this.input=document.createElement("input"); 
this.input.type="text"; 
this.input.value=document.getElementById(this.id).innerHTML; //初始化值 
this.divContainer.appendChild(this.input);

this.btnSubmit=document.createElement("input"); 
this.btnSubmit.value="Submit"; 
this.btnSubmit.type="button"; 
this.divContainer.appendChild(this.btnSubmit);

this.btnCancel=document.createElement("input"); 
this.btnCancel.type="button"; 
this.btnCancel.value="Cancel"; 
this.divContainer.appendChild(this.btnCancel);

}, 
toEdit:function(){ //转换成编辑状态 
this.divContainer.style.display="block"; 
document.getElementById(this.id).style.display="none"; 
this.setValue(); 
}, 
toScan:function(){ //转换成浏览状态 
document.getElementById(this.id).style.display="block"; 
this.divContainer.style.display="none"; 
}, 
getValue:function(){ //获取输入框的值 
return this.input.value; 
}, 
setValue:function(){ //设置输入框的值 
this.input.value=document.getElementById(this.id).innerHTML; 
}, 
save:function(){ //保存编辑结果 
document.getElementById(this.id).innerHTML=this.getValue(); 
this.toScan(); 
}, 
cancel:function(){ //取消当前的编辑 
this.toScan(); 
} 
};

onload=function(){ 
EditField.configure("p"); //调用configure函数，确定那个DOM元素进行就地编辑 
} 
</script>

</head> 
<body> 
<h3>Edit Demo</h3> 
<p id="p"> www.qb5200.com</p> 
<p>Copyright:Super sha.</p> 
</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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